---
title: Calculate the approximate distance of a storm whose thunder is heard… — Olympiad: sound, light, heat, electric… · tree and pragmatics
description: Calculate the approximate distance of a storm whose thunder is heard 21 seconds after its lightning is seen. Exam question 1 of lesson 43 «Olympiad: sound, light, heat, electricity and magnets ★★★» of the physics course of Mova's primary school, with the dependency tree and pragmatics of the questio
---

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# Exam question 1 · Olympiad: sound, light, heat, electricity and magnets ★★★

<!-- .ven lang=en -->
Calculate the approximate distance of a storm whose thunder is heard 21 seconds after its lightning is seen.

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 4 · wrong ✗ · **Who acts:** you · **What happens:** calculate, hear, see · **To what, where:** approximate distance, thunder, lightning

<!-- .vabout -->
This is exam question 1 of lesson 43 «Olympiad: sound, light, heat, electricity and magnets ★★★» of the physics course of Mova's primary school, asked in stiff, formal language. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/physics/43-olympiad-sound-light-heat-and-magnets/#e1).

## The question {#question}

```conllu
# sent_id = question:physics:43-olympiad-sound-light-heat-and-magnets:e1:1
# text = Calculate the approximate distance of a storm whose thunder is heard 21 seconds after its lightning is seen.
1	Calculate	calculate	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
3	approximate	approximate	ADJ	JJ	Degree=Pos	4	amod	_	_
4	distance	distance	NOUN	NN	Number=Sing	1	obj	_	_
5	of	of	ADP	IN	_	7	case	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
7	storm	storm	NOUN	NN	Number=Sing	4	nmod	_	_
8	whose	whose	PRON	WP$	Poss=Yes|PronType=Rel	9	nmod:poss	_	_
9	thunder	thunder	NOUN	NN	Number=Sing	11	nsubj	_	_
10	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	11	aux:pass	_	_
11	heard	hear	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	7	acl:relcl	_	_
12	21	21	NUM	CD	NumForm=Digit|NumType=Card	13	nummod	_	_
13	seconds	second	NOUN	NNS	Number=Plur	11	obl:unmarked	_	_
14	after	after	SCONJ	IN	_	18	mark	_	_
15	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	16	nmod:poss	_	_
16	lightning	lightning	NOUN	NN	Number=Sing	18	nsubj	_	_
17	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	18	aux:pass	_	_
18	seen	see	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	11	advcl	_	SpaceAfter=No
19	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **calculate** | imperative | you *not said here* | the approximate distance of a storm |  |  |  |  | tree rules |
| 2 | **hear** | present · passive |  | thunder |  |  | second |  | vn see-30.1-1-1 «NP V S»: subject=Stimulus |
| 3 | **see** | present · passive |  | thunder's lightning |  |  |  |  | vn comprehend-87.2-1-1 «NP V NP»: subject=Stimulus |

<!-- .note -->
One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
About 63 kilometres

```conllu
# sent_id = question:physics:43-olympiad-sound-light-heat-and-magnets:e1:o1:1
# text = About 63 kilometres
1	About	about	ADV	RB	_	2	advmod	_	_
2	63	63	NUM	CD	NumForm=Digit|NumType=Card	3	nummod	_	_
3	kilometres	kilometre	NOUN	NNS	Number=Plur	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 2 {#o2}

<!-- .ven lang=en -->
About 21 kilometres

```conllu
# sent_id = question:physics:43-olympiad-sound-light-heat-and-magnets:e1:o2:1
# text = About 21 kilometres
1	About	about	ADV	RB	_	2	advmod	_	_
2	21	21	NUM	CD	NumForm=Digit|NumType=Card	3	nummod	_	_
3	kilometres	kilometre	NOUN	NNS	Number=Plur	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 3 {#o3}

<!-- .ven lang=en -->
About 3 kilometres

```conllu
# sent_id = question:physics:43-olympiad-sound-light-heat-and-magnets:e1:o3:1
# text = About 3 kilometres
1	About	about	ADV	RB	_	2	advmod	_	_
2	3	3	NUM	CD	NumForm=Digit|NumType=Card	3	nummod	_	_
3	kilometres	kilometre	NOUN	NNS	Number=Plur	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 4 · ✓ the right answer {#o4}

<!-- .ven lang=en -->
About 7 kilometres

```conllu
# sent_id = question:physics:43-olympiad-sound-light-heat-and-magnets:e1:o4:1
# text = About 7 kilometres
1	About	about	ADV	RB	_	2	advmod	_	_
2	7	7	NUM	CD	NumForm=Digit|NumType=Card	3	nummod	_	_
3	kilometres	kilometre	NOUN	NNS	Number=Plur	0	root	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

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**Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License.

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- ← previous: [Olympiad: sound, light, heat, electric…, test 11](https://md.mova.elamur.ai/free/en/corpora/questions/physics/43-olympiad-sound-light-heat-and-magnets/t11/)
- next →: [Olympiad: sound, light, heat, electric…, exam 2](https://md.mova.elamur.ai/free/en/corpora/questions/physics/43-olympiad-sound-light-heat-and-magnets/e2/)
- ↑ back to [Olympiad: sound, light, heat, electricity and magnets ★★★](https://md.mova.elamur.ai/free/en/corpora/questions/physics/43-olympiad-sound-light-heat-and-magnets/)